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MAX1963|MAX1976

更新时间： 2024-11-26 23:45:55
品牌 Logo 应用领域
美信 - MAXIM 稳压器
页数 文件大小 规格书
12页 354K
描述
Low-Input-Voltage. 300mA LDO Regulators with RESET-bar in SOT and TDFN

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MAX1963|MAX1976 数据手册

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19-3040; Rev 0; 10/03  
Low-Input-Voltage, 300mA LDO Regulators  
with RESET in SOT and TDFN  
General Description  
Features  
The MAX1963/MAX1976 low-dropout linear regulators  
operate from a +1.62V to +3.6V supply and deliver a  
guaranteed 300mA continuous load current with a low  
100mV dropout. The high-accuracy ( 0.ꢀ5% output  
voltage is preset to an internally trimmed voltage in the  
+0.7ꢀV to +3.0V range. An active-low, open-drain reset  
output remains asserted for at least 2.2ms (MAX1963%  
or 70ms (MAX1976% after the output voltage reaches  
regulation. These devices are offered in 6-pin thin  
SOT23 and 6-pin 3mm x 3mm thin DFN packages.  
o Low 1.62V Minimum Input Voltage  
o Guaranteed 300mA Output Current  
o
1.ꢀ5 Aꢁꢁuraꢁc Oꢂer LoadꢃLineꢃ/emp  
o Low 100mV Dropout at 300mA Load  
o 2.2ms (MAX1963) or 70ms (MAX1976)  
RESET Output Flag  
o Supplc Current Independent of Load and  
Dropout Voltage  
An internal PMOS pass transistor allows the low supply  
current to remain independent of load and dropout volt-  
age, making these devices ideal for portable battery-pow-  
ered equipment such as personal digital assistants  
(PDAs%, cell phones, cordless phones, and notebook com-  
puters. Other features include logic-controlled shutdown,  
short-circuit protection, and thermal-overload protection.  
o Logiꢁ-Controlled Shutdown  
o /hermal-Oꢂerload and Short-Cirꢁuit Proteꢁtion  
o Preset Output Voltages (0.7ꢀV to 3.0V)  
o /inc 6-Pin /hin SO/23 Paꢁkage (<1.1mm High)  
o /hin 6-Pin /DFN Paꢁkage (<0.8mm High)  
Applications  
Ordering Information  
Notebook Computers  
Cellular and PCS Telephones  
Personal Digital Assistants (PDAs%  
Hand-Held Computers  
Digital Cameras  
PAR/*  
/EMP RANGE  
PIN-PACKAGE  
MAX1963EZT_ _ _-T  
MAX1963ETT_ _ _-T  
MAX1976EZT_ _ _-T  
MAX1976ETT_ _ _-T  
-40°C to +8ꢀ°C 6 Thin SOT23-6  
-40°C to +8ꢀ°C 6 TDFN  
-40°C to +8ꢀ°C 6 Thin SOT23-6  
-40°C to +8ꢀ°C 6 TDFN  
*Insert the desired three-digit suffix (see the Selector Guide) into  
the blanks to complete the part number. Contact the factory for  
other output voltages.  
PCMCIA Cards  
CD and MP3 Players  
Typical Operating Circuit  
Pin Configurations  
TOP VIEW  
INPUT  
OUTPUT  
1.62V TO 3.6V  
0.75V TO 3.0V  
300mA  
IN  
OUT  
C
IN  
1µF  
LOGIC  
SUPPLY  
C
1
2
3
6
5
4
OUT  
I.C.  
IN  
GND  
OUT  
4.7µF  
1
2
3
6
5
4
IN  
OUT  
MAX1963  
MAX1976  
MAX1963  
MAX1976  
MAX1963  
MAX1976  
I.C.  
SHDN  
GND  
100kΩ  
ON  
RESET  
RESET  
SHDN  
TO µC  
SHDN  
RESET  
OFF  
/DFN  
3mm x 3mm  
GND  
/HIN SO/23  
Selector Guide appears at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...12

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